Computer Intrusion: Detecting Masquerades
William DuMouchel, Wen‐Hua Ju, Alan F. Karr, Matthias Schonlau, Martin Theusan, Yehuda Vardi · Statistical Science · 2001
Masqueraders in computer intrusion detection are people who use somebody else’s computer account. We investigate a number of statistical approaches for detecting masqueraders. To evaluate them, we collected UNIX command data from 50 users and then contaminated the data with masqueraders. The experiment was blinded. We show results from six methods, including two approaches from the computer science community.